My FiveFingers

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Vibram FiveFinger KSOs

The second installment in the FiveFingers lineup, The KSO (for “Keep Stuff Out”), is arguably one the most popular models to date. Though they feature a slightly thicker soles than the Classics and Sprints with the addition of a 2mm EVA footbed, these have been the go-to shoe since their introduction in 2008. With the introduction of a closed top and the security of a hook and loop strap, the KSO’s have been the most robust addition to the lineup.

Top View of KSOs in Black / Gray / Camo

Top View of KSOs in Black / Gray / Camo

Side view of KSOs in Remix Red / Black Remix

Side view of KSOs in Remix Red / Black Remix

Side view of KSOs in Gray / Palm / Clay

What These FiveFingers Will Help You Do

With the KSO’s, (with few exceptions) your imagination is the limit. Here’s just a few things they’re good for:

  • Running
  • Light hiking/trekking/bouldering
  • Weightlifting
  • Aerobics/yoga
  • Casual wear (especially for folks who don’t care for the ballerina slipper look of the Classics)
  • Travel
  • Watersports

People Who Should Buy the Vibram FiveFinger KSO

  • Runners
  • Athletes
  • Hikers (on milder terrain)
  • People who want a minimalist casual shoe, but don’t care for the open-top design of the Classic
  • Boaters/Watersport enthusiasts

You Shouldn’t Buy These FiveFingers If…

There’s not much your KSO’s can’t handle, but there are these few exceptions:

  • You’re a hardcore hiker: As with the Classics and Sprints, the razor-siped soles don’t provide much traction on exceptionally muddy or rocky terrain.
  • You live in more extreme or wet climates: The KSO’s take the weather better than the Classics or Sprints, but don’t insulate from heat/cold all that well. Also, if it’s wet out, so are your feet.

Technical Specs

  • 3.5mm razor-siped Vibram rubber sole
  • 2mm EVA footbed
  • Stretch nylon upper
  • Secure hook and loop closure

You May Also Be Interested In These Models

These models are similar to the KSO’s, so you might want to check them out:

  • Sprint
  • Treksport
  • Flow
  • Bikila
  • Trek